uthenticode is a small cross-platform library for partially verifying Authenticode digital signatures. Version 1.0.9 of uthenticode hashed the entire file rather than hashing sections by virtual address, in violation of the Authenticode specification. As a result, an attacker could modify code within a binary without changing its Authenticode hash, making it appear valid from uthenticode's perspective. Versions of uthenticode prior to 1.0.9 are not vulnerable to this attack, nor are versions in the 2.x series. By design, uthenticode does not perform full-chain validation. However, the malleability of signature verification introduced in 1.0.9 was an unintended oversight. The 2.x series addresses the vulnerability. Versions prior to 1.0.9 are also not vulnerable, but users are encouraged to upgrade rather than downgrade. There are no workarounds to this vulnerability.
References
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: GitHub_M
Published: 2023-08-09T15:34:07.776Z
Updated: 2023-08-09T15:34:07.776Z
Reserved: 2023-08-07T16:27:27.077Z
Link: CVE-2023-39969
JSON object: View
NVD Information
Status : Analyzed
Published: 2023-08-09T16:15:09.733
Modified: 2023-08-16T17:12:53.300
Link: CVE-2023-39969
JSON object: View
Redhat Information
No data.
CWE